Looks like you might be having an issue with a third party plugin or script. Regretfully, we cannot provide support for third party plugins or scripts as stated on our support policy due to the fact that there is simply no way to account for all of the potential variables at play when using another developer’s plugin or script. Because of this, any questions you have regarding setup, integration, or troubleshooting any piece of functionality that is not included on the theme package will need to be directed to the plugin author. Anyway, you can try this on Quick CSS: